Tank trailer



FIG. 1 is a front perspective view of a tank trailer showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is an elevational view taken from one side thereof, the opposite side being a mirror image of the side shown;

FIG. 4 is a top plan view thereof;

FIG. 5 is a cross sectional view taken along line 5--5 of FIG. 3; and

FIG. 6 is a cross sectional view taken along line 6--6 of FIG. 2. 

The ornamental design for a tank trailer, as shown and described. 